3results about How to "Structural design innovation" patented technology

The application belongs to the technical field of powder metallurgy, and particularly discloses a nanoscale oxide particle dispersed aluminum-titanium target material and a preparation method and application thereof. x The nanoscale oxide particle dispersed aluminum-titanium target material has a double-layer structure, including a plated raw material layer and a base layer. x The plated raw material layer is composed of Al, Ti and MeO, wherein the mass percentage of Al and Ti accounts for 80-95%, and the mass percentage of MeO accounts for 5-20%; and the base layer is composed of Al and Ti or pure Al. The nanoscale oxide particle dispersed aluminum-titanium target material and the preparation method and application thereof have the advantages that the aluminum-titanium target material preparation process flow is simple, the production efficiency is high, the method is economic and environmentally friendly, and the method is suitable for batch production; the aluminum-titanium target material prepared by the method solves the binding problem of brittle target material, the target material has high density, meets the demand of hard alloy coating film plating, has no cracking problem in the plating process, and has high coating hardness and good wear resistance.

The invention discloses a modified PVDF (Polyvinylidene Fluoride) binder for a sulfide all-solid-state battery as well as a preparation method and application of the modified PVDF binder. The preparation method of the modified PVDF binder comprises the following steps: dissolving polyvinylidene fluoride, a polymerizable monomer and a chain transfer agent in N, N-dimethylformamide, and carrying out a modification reaction to obtain a block copolymer; precipitating and separating out in methanol, washing, and drying in vacuum to obtain the white powdery modified PVDF binder. The invention also discloses the modified PVDF binder prepared by the method, a composite positive electrode with a gradient structure, and an all-solid-state battery comprising the composite positive electrode. The prepared modified PVDF has good solubility in a non-polar solvent, and erosion of the polar solvent to sulfide electrolyte is avoided. A continuous gradient structure from an electron enrichment area to an ion enrichment area is constructed in the pole piece, the prepared composite positive pole piece has excellent electron and ion conduction at the same time, and the problems of interface transmission bottleneck and solvent compatibility in a sulfide system are effectively solved.

The invention discloses a preparation method and application of an electrochemical biosensor based on a self-protection palindromic DNA (deoxyribonucleic acid) nanosphere. The electrochemical biosensor comprises an HP-trigger, a target miRNA (micro ribonucleic acid) and a self-protection DNA palindromic nanosphere core structure. The DNA nanosphere is of a three-dimensional spherical structure formed by four single-stranded DNAs through complementary base pairing, the three single strands of SEP-Sa, SEP-Sb and SEP-Sc contain 12 nt palindromic cohesive ends and 15 nt single-stranded arms, the single strand of HP-Sc contains 35 nt prolonged hairpin structures, the structural stability is enhanced through a self-protection mechanism of a palindromic sequence, and structural dissociation triggered by target miRNA is achieved. The target miRNA is combined with an HP-Sc hairpin structure to trigger conformational change, release complementary chains and dissociate palindromic nanospheres, and exposed DNA sites are combined with MB to generate electrochemical signals, so that a novel tool is provided for early diagnosis of tumors.